The Bug:

Sniffers' models and sounds are out of sync while they're searching.

When a sniffer searches, its model begins sniffing before the sniffing sound can be heard. This causes their models and sounds to be out of sync which is both visually and auditorily misleading. I believe the reason for this is because the minecraft:entity.sniffer.searching sound event has a delay before producing sniffing sounds.

Steps to Reproduce:

1. Summon a sniffer and watch closely as it begins searching.
2. Observe if the sniffer sniffs at the same time that its sniffing sound can be heard.
3. Take note as to whether or not sniffers' models and sounds are out of sync while they're searching.

Observed Behavior:

Sniffers' models and sounds are out of sync while they're searching. In other words, sniffers' models begin sniffing before the sniffing sounds can be heard.

Expected Behavior:

Sniffers' models and sounds would be in sync while they're searching. In other words, sniffers' models would sniff in time with their sniffing sounds.